There’s a shitload of selection bias at play there. When we do prepare for something and actually successfully prevent it, your brain won’t remember it for you, unless you try really hard.
So, it’s almost impossible to just figure out how well we prepare, using some kind of sniff test. Our human brains just royally suck at that specific kind of analysis.
By way of example, Biden’s recent investment into port security. If a problem never occurs now, are you going to give him a point for that, or just never really consider it again?
This is partly why the scientific method needs to be so strict, slow and rigorous to get anywhere.